Vaisala HMT130, HMT120 Technical data

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Vaisala HUMICAP® Humidity and Temperature
Transmitters HMT120 and HMT130

Features/Benefits

Vaisala HUMICAP® technology

▪

with humidity sensor
HUMICAP® 180R

2-wire loop-powered or 3-wire

▪

voltage output configurations

Interchangeable probe

▪

(easy field calibration)

Accurate and reliable

▪

Resistant to dust and most

▪

chemicals

Optional LCD display

▪

USB cable available for a PC

▪

connection for maintenance

Wall-mounted or with a

▪

remote probe

Constant output probe

▪

The HMT120/130 with and without a display.

The Vaisala HUMICAP® Humidity and
Temperature Transmittersw HMT120
and HMT130 are designed for
humidity and temperature monitoring
in cleanrooms and are also suitable
for demanding HVAC applications.

Performance

The HMT120/130 incorporates Vaisala
HUMICAP® technology that measures
relative humidity accurately and
reliably. The Vaisala HUMICAP® is
resistant to dust and most chemicals.

The transmitter enclosure is
optimized for use in cleanrooms.
The smooth surface of the enclosure
makes it easy to clean and the
enclosure material is chosen
to tolerate purifying agents.
Furthermore, the cabling can be

done through the back wall of the
transmitter.

Interchangeable Probe

The HMT120/130 transmitters use
a fully interchangeable relative
humity probe. The probe can be
easily removed and replaced with
a new one without having to adjust
the transmitter, which allows for
easy and quick recalibration of
the transmitter. The probe can
be adjusted using one of Vaisala’s
portable meters as a reference.

Also available is a constant output
probe with xed RH and T output
for convenient inspection of the
monitoring system and signal
transfer line.

available

Can be mounted outdoors

▪

using a Vaisala installation
kit and the Vaisala Radiation
Shield DTR502B

Enclosure IP65

▪

Suitable for cleanrooms and

▪

demanding HVAC applications

Available Options

The HMT120 and HMT130
transmitters are available as wall
mounted or with remote probe. For
high temperature applications or
where space is limited, the remote
probe is ideal. The transmitters
come with an optional, LCD display,
which shows the measurement
results of selected parameters in
selected units. The parameters
are displayed simultaeously at two
separate rows on the display.

Technical Data

46

39

M

4

; 4 pcs

91

92

78

Wall Assembly dimensions

Performance

RELATIVE HUMIDITY

Measurement range 0 ... 100 %RH
Accuracy including non-linearity, hysteresis, and repeatability

at 0 °C ... +40 °C ±1.7 %RH (0 ... 90 %RH)

±2.5 %RH (90 ... 100 %RH)
at -40 °C ... +0 °C and
at +40 °C ... +80 °C

±3.0 %RH (0 ... 90 %RH)

±4.0 %RH (90 ... 100 %RH)

Factory calibration uncertainty at +20 °C (+68 °F) ±1.5 %RH

®

Humidity sensor Vaisala HUMICAP

TEMPERATURE

180R

Measurement range -40 °C ... +80 °C
Accuracy over temperature range

at +15 °C ... +25 °C ±0.2 °C
at 0 ... +15 °C and at +25 °C ... +40 °C ±0.25 °C
at -40 °C ... +0 °C and at +40 °C ... +80 °C ±0.4 °C

Temperature sensor Pt1000 RTD 1/3 Class B IEC 751
Operating temperature range

transmitter body, no display -40 °C ... +60 °C
transmitter body, with display -20 °C ... +60 °C
HMP110 probe -40 °C ... +80 °C

Storage temperature range -50 °C ... +70 °C
Electromagnetic compatibility EN 61326-1

and EN 55022

Inputs and outputs

HMT120 TWO-WIRE TRANSMITTER (LOOP POWERED)

Current output signals 4 ... 20 mA
External loop voltage 10 ... 30 VDC (R

20 ... 30 VDC (R

HMT130 THREE-WIRE TRANSMITTER

Voltage output signals 0 ... 1 V, 0 ... 5 V, 0 ... 10 V

or user defi ned between 0 ... 10 V
Min output resistance 1 kohm
Serial output RS485, non-isolated
Relay output 1 relay (max. 50 VDC, 200 mA)
Supply voltage 10 ... 35 VDC

15 ... 35 VDC (when output 0 ... 10 V)

Current consumption at 24 VDC 8 mA, if relay closed 15 mA
Max. additional error caused by the
analog outputs after calibration at
+20 °C ambient temperature ±0.1 % of FS output signal
Temperature dependence of the
analog outputs ±0.005 % of FS output signal

= 0 ohms)

L

< 500 ohms)

L

24 VAC (±20 %)

Mechanics

Material

transmitter housing PBT plastic
display window PC plastic
probe body Chrome coated aluminum

probe grid fi lter Chrome coated ABS plastic
Housing classifi cation IP65
Connections

inputs and outputs Screw terminals 0.5 ... 1.5 mm

probe interface 4-pin M8 female panel connector
Probe cable lengths 3 m, 5 m, 10 m - up to 50 m
Display (optional) 128 x 64 resolution full graphics

B&W display without backlight

Weigth (including probe) 270 g

Accessories

Humidity and temperature probe HMP110*
Humidity and temperature replacement probe HMP110R*
Constant output probe HMP110REF*
Humidity sensor HUMICAP
Probe mounting fl ange 226061
Probe mounting clamps, 10 pcs 226067
HMP110 sensor protection

plastic grid fi lter DRW010522SP

plastic grid with membrane fi lter DRW010525

stainless steel sintered fi lter HM46670SP
Probe cable 3 m HMT120Z300
Probe cable 5 m HMT120Z500
Probe cable 10 m HMT120Z1000
Radiation shield DTR502B
Probe installation kit for DTR502 210623
Rain shield with installation kit 215109
Duct installation kit 215619
HMI41 connection cable 25917ZZ
HM70 connection cable 211339
USB serial interface cable 219685

*See separate order form

116

120

14572

®

180R

2

For more information, visit
www.vaisala.com or contact
us at [e-mail]

Ref. B211086EN-A ©Vaisala 2010

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